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CN-121738018-B - Multi-network biological matrix hydrogel conductive coating and preparation method and application thereof

CN121738018BCN 121738018 BCN121738018 BCN 121738018BCN-121738018-B

Abstract

The invention belongs to the technical field of functional materials and textiles, and particularly relates to a multi-network biological matrix hydrogel conductive coating, and a preparation method and application thereof. Compared with the prior art, the multi-network biological matrix hydrogel conductive coating provided by the invention takes natural polymers and biological base ionic liquid as core raw materials, has the characteristic of biodegradability, realizes two functions of light absorption, heating and static resistance in a one-step coating process through the combination of a CNTs/ionic liquid conductive network and a natural polymer ternary network, and greatly enhances the mechanical strength inside the coating and the interfacial bonding force between the coating and a synthetic fiber fabric through a double-crosslinked network formed by thermal crosslinking and Ca 2+ ionic crosslinking, so that the functional coating has excellent washing resistance, abrasion resistance and long-term use stability.

Inventors

  • LIU ZHIMIN
  • DING LIQUN
  • SHI QINLONG
  • HU HUINA
  • ZHANG SHASHA
  • ZHAO YANMIN

Assignees

  • 波司登羽绒服装有限公司

Dates

Publication Date
20260508
Application Date
20260225

Claims (10)

  1. 1. The multi-network biological matrix hydrogel conductive coating is characterized by being formed by crosslinking coating slurry, wherein the coating slurry comprises carbon nanotubes, biological matrix ionic liquid, high polymer substances, a crosslinking agent, a leveling agent and an adhesive, the high polymer substances comprise chitosan substances, alginate and a thickening agent, the crosslinking agent is selected from polycarboxylic acid compounds, the biological matrix ionic liquid is selected from choline amino acid ionic liquid, and the thickening agent is selected from gelatin; The mass ratio of the carbon nano tube to the bio-based ionic liquid is 1 (5-15); the mass of the carbon nano tube is 5% -20% of the mass of the high molecular substance; The mass ratio of the chitosan substance to the alginate to the thickener is (2-4) (1-3).
  2. 2. The multi-network biological matrix hydrogel conductive coating of claim 1, wherein the cross-linking agent is 5% -25% of the mass of the polymeric substance.
  3. 3. The multi-network biological matrix hydrogel conductive coating of claim 1, wherein the mass of the polymeric substance is 2% -10% of the mass of the coating slurry; the mass of the leveling agent is 0.1% -0.5% of the mass of the coating slurry; the mass of the adhesive is 5% -15% of the mass of the coating slurry.
  4. 4. The multi-network biological matrix hydrogel conductive coating of claim 1, wherein the chitosan-based material is selected from chitosan and/or carboxymethyl chitosan; the alginate is selected from sodium alginate.
  5. 5. The multi-network biological matrix hydrogel conductive coating of claim 4, wherein the choline amino acid ionic liquid is selected from choline glycinate ionic liquids; the cross-linking agent is selected from citric acid; the leveling agent is selected from organosilicon leveling agents; The adhesive is selected from aqueous polyurethane.
  6. 6. The multi-network biological matrix hydrogel conductive coating of claim 1, wherein the crosslinking comprises covalent crosslinking and ionic crosslinking.
  7. 7. A method for preparing the multi-network biological matrix hydrogel conductive coating of claim 1, comprising the steps of: S1) mixing carbon nano tubes, bio-based ionic liquid and water to obtain carbon nano tube ionic liquid dispersion liquid; mixing a high molecular substance with water to obtain a high molecular substance solution; s2) mixing the carbon nanotube ionic liquid dispersion liquid, a high polymer substance solution, a cross-linking agent, a leveling agent and an adhesive to obtain a coating slurry; S3) transferring the coating slurry to the surface of a substrate, heating and crosslinking, and then soaking in a solution containing calcium salt for ionic crosslinking to obtain the multi-network biological matrix hydrogel conductive coating.
  8. 8. The preparation method of claim 7, wherein the concentration of the carbon nanotube ionic liquid in the carbon nanotube ionic liquid dispersion is 2-10 mg/mL; the mass concentration of the polymer substance in the polymer substance solution is 3% -8%.
  9. 9. The preparation method according to claim 7, wherein the mixing speed in the step S2) is 100-1000 rpm, and the mixing time is 0.5-2 h; the heating temperature in the step S3) is 110-130 ℃, and the heating time is 5-20 min; The concentration of calcium salt in the solution containing the calcium salt in the step S3) is 1% -5%, and the soaking time is 5-20 min; after the ion crosslinking in the step S3) is finished, post-treatment is further carried out to obtain the multi-network biological matrix hydrogel conductive coating; The post-treatment step comprises soaking in water and drying at room temperature in a dark place.
  10. 10. A functional textile comprising a textile substrate and a multi-network bio-matrix hydrogel conductive coating according to any one of claims 1 to 6 disposed on at least one surface of the textile substrate.

Description

Multi-network biological matrix hydrogel conductive coating and preparation method and application thereof Technical Field The invention belongs to the technical field of functional materials and textiles, and particularly relates to a multi-network biological matrix hydrogel conductive coating, and a preparation method and application thereof. Background As a material in direct contact with the human body, the skin-friendly comfort, environmental friendliness and additional functions of textiles have been the key directions of industry upgrading. Particularly in cold environment, the development of the technology which has lasting antistatic property, light absorption and heating and does not influence the original comfort of the fabric has important significance. At present, the market-related technology has obvious defects: In terms of antistatic function, the mainstream technology adopts antistatic agents (mostly surfactants) to carry out after-finishing on fabrics. The method has the remarkable defects that the antistatic agent has extremely poor water resistance, the effect is rapidly attenuated after multiple times of washing, partial chemical antistatic agents possibly cause skin allergy and damage skin affinity, and in addition, the antistatic effect is greatly influenced by environmental humidity, and the effectiveness is suddenly reduced in a dry environment. In the aspect of light-heat conversion and heat preservation, the traditional mode is to incorporate far infrared radiation materials (such as ceramic powder, zirconia and the like). The material is usually inorganic powder, has weak binding force with organic fibers, is easy to fall off in the using and washing processes, and has insufficient function durability. Meanwhile, the addition of a large amount of powder can lead to hardening and hardening of the fabric hand feeling, seriously sacrificing the flexibility and the air permeability of the fabric, and is contrary to the original purpose of pursuing skin-friendly comfort. In terms of environmental friendliness, most of the functional finishes are derived from petroleum-based chemicals or non-renewable mineral resources, and the production and disposal processes are not environmentally friendly. Meanwhile, the characteristic of difficult biodegradation also increases environmental burden, and cannot meet the increasing green consumption demands. In the aspect of function integration, the prior art adopts a superposition process to respectively realize antistatic and thermal functions, the flow is complex, the combination of multiple chemical reagents can interfere with each other, even side effects are generated, and the multifunctional integrated high-efficiency and stable integration is difficult to realize. Therefore, a new technology is needed in the field, which can fundamentally solve the problems, and an environment-friendly textile coating which is natural, comfortable to attach to skin, durable in function and integrates antistatic, light absorption and heating is developed. Disclosure of Invention In view of the above, the technical problem to be solved by the invention is to provide a multi-network biological matrix hydrogel conductive coating with skin-friendly, light-absorbing and heating and antistatic functions, and a preparation method and application thereof. The invention provides a multi-network biological matrix hydrogel conductive coating, which is formed by crosslinking coating slurry, wherein the coating slurry comprises carbon nanotubes, biological matrix ionic liquid, high polymer substances, a crosslinking agent, a leveling agent and an adhesive, wherein the high polymer substances comprise chitosan substances, alginate and a thickening agent, and the crosslinking agent is selected from polycarboxylic acid compounds; The mass ratio of the carbon nano tube to the bio-based ionic liquid is 1 (5-15); the mass of the carbon nano tube is 5% -20% of the mass of the high molecular substance; The mass ratio of the chitosan substance to the alginate to the thickener is (2-4) (1-3). Preferably, the mass of the cross-linking agent is 5% -25% of the mass of the high molecular substance. Preferably, the mass of the high molecular substance is 2% -10% of the mass of the coating slurry; the mass of the leveling agent is 0.1% -0.5% of the mass of the coating slurry; the mass of the adhesive is 5% -15% of the mass of the coating slurry. Preferably, the bio-based ionic liquid is selected from one or more of choline amino acid ionic liquid, benzyl functional imidazolium salt, benzimidazole system and ureido functional ionic liquid; The chitosan substance is selected from chitosan and/or carboxymethyl chitosan; the alginate is selected from sodium alginate; the thickener is selected from gelatin. Preferably, the choline amino acid ionic liquid is selected from choline glycinate ionic liquids; the cross-linking agent is selected from citric acid; the leveling agent is selected from